Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
10cos(y)=x, 12cos(z)=x, 5cot(y)+5cot(z)=x
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random